/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets.gp.patient.prescription;

import be.ugent.medirem.logic.PrescriptionRemote;
import be.ugent.medirem.persistence.entity.details.PrescriptionDetails;
import be.ugent.medirem.persistence.exception.EntityNotFoundException;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Simon
 */
public class PatientPrescriptionServlet extends HttpServlet {

    @EJB
    private PrescriptionRemote prescriptionBean;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet PatientPrescriptionServlet</title>");  
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet PatientPrescriptionServlet at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
             */
        } finally {
            out.close();
        }
    }

    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        Long pid = (Long) request.getSession().getAttribute("pid");
        request.setAttribute("patientid", pid);
        Long id = pid;
        if (id == null || id == 0) {
            request.getRequestDispatcher("/gp/patients").forward(request, response);
            return;
        }

        request.setAttribute("patientid", id);
        String prescriptionId = request.getParameter("id");
        if (prescriptionId == null) {
            List<PrescriptionDetails> list = prescriptionBean.getPrescriptions(id);
            request.setAttribute("prescriptions", list);
            request.getRequestDispatcher("/gp/patient/prescription/list.jsp").forward(request, response);
            return;
        }
        else {
            PrescriptionDetails p = null;
            try {
                p = prescriptionBean.getPrescriptionDetails(Long.parseLong(prescriptionId));
            } catch (EntityNotFoundException ex) {
                Logger.getLogger(PatientPrescriptionServlet.class.getName()).log(Level.SEVERE, null, ex);
            } catch (IllegalArgumentException ex) {
                Logger.getLogger(PatientPrescriptionServlet.class.getName()).log(Level.SEVERE, null, ex);
            }
            request.setAttribute("prescription", p);
            request.getRequestDispatcher("/gp/patient/prescription/show.jsp").forward(request, response);
        }

    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
